CN112610580A - Expansion bolt - Google Patents
Expansion bolt Download PDFInfo
- Publication number
- CN112610580A CN112610580A CN202011529580.5A CN202011529580A CN112610580A CN 112610580 A CN112610580 A CN 112610580A CN 202011529580 A CN202011529580 A CN 202011529580A CN 112610580 A CN112610580 A CN 112610580A
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- Prior art keywords
- sliding block
- groove
- bolt
- expansion
- adjusting
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- 238000003780 insertion Methods 0.000 claims description 26
- 230000037431 insertion Effects 0.000 claims description 26
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000012856 packing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/08—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation
- F16B13/0808—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation by a toggle-mechanism
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention relates to the field of bolts, in particular to an expansion bolt which comprises a bolt main body component, an outer adjusting component and an inner adjusting component, wherein the outer adjusting component and the inner adjusting component are arranged in the bolt main body component, an outer adjusting sleeve and an inner adjusting sleeve in the outer adjusting component and the inner adjusting component can drive a first sliding block and a second sliding block to slide in an adjusting groove, when the first sliding block and the second sliding block can slide, the distance between the first sliding block and the second sliding block can be adjusted through the outer adjusting sleeve and the inner adjusting sleeve, after the distance between the first sliding block and the second sliding block is changed, an included angle between a first expansion rod and a second expansion rod is changed, the first expansion rod and the second expansion rod extend outwards to replace the traditional support mode of the expansion bolt, so that the contact area between an outer shell and a floor slab can be effectively increased, the expansion bolt connection can be made more stable.
Description
Technical Field
The invention relates to the field of bolts, in particular to an expansion bolt.
Background
An expansion bolt is a special screw connector for fixing pipeline branch/hanger/bracket or equipment on wall, floor and column.
The expansion bolts used for the floor slab are mostly characterized in that the outer shell is inserted into the floor slab and then is propped open through the inserted inner bolts, so that the outer shell is inserted into the floor slab, the thickness of the floor slab is different, the hardness of the floor slab is different, when the thickness of the floor slab is thin, contact points between the propped-open area of the outer shell and the floor slab are few, the floor slab can not be effectively and stably fixed on the outer shell, and the expansion bolts can not effectively hang objects.
Disclosure of Invention
The present invention provides an expansion bolt which addresses the problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: an expansion bolt comprises a bolt main body assembly, an outer adjusting assembly and an inner adjusting assembly, wherein the outer adjusting assembly is arranged inside the bolt main body assembly, the inner adjusting assembly is arranged inside the outer adjusting assembly, the bolt main body assembly comprises an outer shell, an inner bolt, a conical insertion end, a groove, a nut and an adjusting groove, an internal thread is arranged on the side wall of the inner circle side of the outer shell, the inner bolt is arranged inside the outer shell, the top of the outer shell is provided with the conical insertion end, the bottom of the conical insertion end is provided with the groove corresponding to the inner bolt, the inner part of the groove is provided with an internal thread corresponding to the external thread on the outer wall of the inner bolt, the thread of the inner bolt is inserted inside the groove, one end of the inner bolt, which is far away from the conical insertion end, extends out of the outer shell, and the nut is sleeved on the outer wall of, a plurality of adjusting grooves are formed in the outer wall of the outer shell in a penetrating mode at equal intervals.
Specifically, the outer adjusting component comprises an outer adjusting sleeve, a first sliding block, a first limit sliding block, a first annular limit sliding groove, a hinge lug, a first pin shaft, a first expansion rod, a second pin shaft and a second expansion rod, wherein the inner cylinder wall and the outer cylinder wall of the outer adjusting sleeve are respectively provided with an internal thread and an external thread, the outer adjusting sleeve is inserted in the outer shell in a threaded manner, the outer adjusting sleeve is in threaded connection with the outer shell, one end in the inner adjusting groove is connected with the first sliding block in a sliding manner, the side wall of the first sliding block, which is close to one side of the outer adjusting sleeve, is fixedly connected with the first limit sliding block, the outer cylinder wall of the outer adjusting sleeve is provided with the first annular limit sliding groove corresponding to the first limit sliding block, the first annular limit sliding groove is matched with the first limit sliding block, and the top of the first sliding block is fixedly connected with the hinge lug, the two sides of the top of the hinged lug are provided with first expansion rods, the first expansion rods are hinged with the hinged lug through first hinge pins, one ends, far away from the hinged lug, of the first expansion rods are hinged with second expansion rods through second hinge pins, the second expansion rods are arranged between the two first expansion rods, and the lengths of the second expansion rods are larger than those of the first expansion rods.
Specifically, the inner adjusting assembly comprises an inner adjusting sleeve, a second sliding block, a second limiting sliding block, a second annular limiting sliding groove, a hinge concave block, a hinge groove and a third pin shaft, wherein an inner wall and an outer wall of the inner adjusting sleeve are respectively provided with an internal thread and an external thread, the inner adjusting sleeve is in threaded insertion connection with the inside of the outer adjusting sleeve, the inner adjusting sleeve is in threaded sleeve connection with the outer wall of the inner bolt, the inner top of the adjusting groove is in sliding connection with the second sliding block, the side wall of the second sliding block, which is close to one side of the inner adjusting sleeve, is fixedly connected with the second limiting sliding block, the outer wall of the inner adjusting sleeve is provided with the second annular limiting sliding groove corresponding to the second limiting sliding block, the bottom of the second sliding block is fixedly connected with the hinge concave block, the hinge groove is formed in the bottom of the hinge concave block, and one end, which is far away from the second pin shaft, of the second expansion rod, and one end of the second expansion rod extending into the hinge groove is hinged with the hinge concave block through a third pin shaft.
Specifically, the one end equidistant fixedly connected with a plurality of bracer that the toper end of pegging graft is close to the shell body, the spread groove has been seted up to corresponding the bracer on the inner wall of shell body, spread groove and bracer phase-match set up.
Specifically, a gasket is arranged between the screw cap and the outer shell, and the gasket is sleeved at one end, extending out of the outer shell, of the inner bolt.
Specifically, the diameter of the conical insertion end is larger than the inner diameter of the outer shell.
The invention has the beneficial effects that:
(1) the expansion bolt of the invention can drive the first sliding block and the second sliding block to slide in the adjusting groove through the outer adjusting component and the inner adjusting component which are arranged in the bolt main body component, when the first sliding block and the second sliding block can slide, the distance between the first sliding block and the second sliding block can be adjusted through the outer adjusting sleeve and the inner adjusting sleeve, after the distance between the first sliding block and the second sliding block is changed, the included angle between the first expansion rod and the second expansion rod is changed, the first expansion rod and the second expansion rod extend outwards, the support mode of the traditional expansion bolt is replaced, the contact area between the outer shell and the floor slab can be effectively improved, the connection of the expansion bolt can be more stable, and the first sliding block and the second sliding block can slide in the adjusting groove, so that the insertion depth of the expansion bolt can be adjusted more as required.
(2) According to the expansion bolt, the traditional plastic outer shell is replaced by the metal outer shell in the bolt main body assembly, so that the overall strength of the expansion bolt can be effectively improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural view of an expansion bolt according to the present invention in use;
FIG. 2 is a schematic structural view of an expansion bolt according to the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2 of an expansion bolt according to the present invention;
FIG. 4 is a schematic structural view of a tapered insertion end of an expansion bolt according to the present invention;
fig. 5 is a schematic view of an internal structure of an outer shell in an expansion bolt according to the present invention;
fig. 6 is a schematic view of a connection structure of a first expansion rod and a second expansion rod in the expansion bolt provided by the invention;
fig. 7 is a schematic structural view of an outer adjustment sleeve and an inner adjustment sleeve in an expansion bolt provided by the present invention.
In the figure: 1. a bolt body assembly; 11. an outer housing; 12. an inner bolt; 13. a tapered plug end; 14. a groove; 15. a support block; 16. connecting grooves; 17. a gasket; 18. a nut; 19. an adjustment groove; 2. an outer adjustment assembly; 21. an outer adjustment sleeve; 22. a first slider; 23. a first limit slide block; 24. a first annular limiting chute; 25. a hinge projection; 26. a first pin shaft; 27. a first expansion link; 28. a second pin shaft; 29. a second expansion link; 3. an inner adjustment assembly; 31. an inner adjustment sleeve; 32. a second slider; 33. a second limit slide block; 34. a second annular limiting chute; 35. hinging the concave block; 36. a hinge slot; 37. and a third pin shaft.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-7, the expansion bolt according to the present invention comprises a bolt main body assembly 1, an outer adjusting assembly 2 and an inner adjusting assembly 3, wherein the outer adjusting assembly 2 is disposed inside the bolt main body assembly 1, the inner adjusting assembly 3 is disposed inside the outer adjusting assembly 2, the bolt main body assembly 1 comprises an outer shell 11, an inner bolt 12, a tapered insertion end 13, a groove 14, a nut 18 and an adjusting groove 19, an inner thread is disposed on a side wall of an inner circular side of the outer shell 11, the inner bolt 12 is disposed inside the outer shell 11, a tapered insertion end 13 is disposed on a top of the outer shell 11, the groove 14 is disposed at a bottom of the tapered insertion end 13 corresponding to the inner bolt 12, an inner thread is disposed inside the groove 14 corresponding to an outer thread on an outer wall of the inner bolt 12, and the bolt 12 is threadedly inserted inside the groove 14, the one end that interior bolt 12 kept away from toper grafting end 13 extends shell body 11, just screw thread sleeve has been connected with nut 18 on the outer wall that interior bolt 12 extends shell body 11 one end, a plurality of adjustment tank 19 has been seted up to equidistant running through of outer wall of shell body 11, and the toper grafting end 13 at shell body 11 top can be convenient for peg graft shell body 11 in the inside of wall body, the use of shell body 11 of being convenient for.
Specifically, the outer adjusting assembly 2 includes an outer adjusting sleeve 21, a first sliding block 22, a first limiting sliding block 23, a first annular limiting sliding groove 24, a hinge projection 25, a first pin shaft 26, a first expansion rod 27, a second pin shaft 28 and a second expansion rod 29, wherein an inner cylinder wall and an outer cylinder wall of the outer adjusting sleeve 21 are respectively provided with an internal thread and an external thread, the outer adjusting sleeve 21 is inserted in the outer shell 11 in a threaded manner, the outer adjusting sleeve 21 is connected with the outer shell 11 in a threaded manner, one end inside the adjusting groove 19 is connected with the first sliding block 22 in a sliding manner, a side wall of the first sliding block 22 close to one side of the outer adjusting sleeve 21 is fixedly connected with the first limiting sliding block 23, the outer cylinder wall of the outer adjusting sleeve 21 is provided with the first annular limiting sliding groove 24 corresponding to the first limiting sliding block 23, and the first annular limiting sliding groove 24 is matched with the first limiting sliding block 23, the articulated lug 25 of top fixedly connected with of first sliding block 22, the both sides at articulated lug 25 top all are provided with first expansion link 27, first expansion link 27 is articulated with articulated lug 25 through first round pin axle 26, two the one end that articulated lug 25 was kept away from to first expansion link 27 articulates through second round pin axle 28 has second expansion link 29, second expansion link 29 sets up between two first expansion links 27, the length of second expansion link 29 is greater than the length of first expansion link 27, and outer adjusting sleeve 21 in the outer regulating part 2 can be rotatory in the inside of shell body 11, and outer adjusting sleeve 21 can drive first sliding block 22 and go up and down in the inside of adjustment tank 19 through the inside first spacing slider 23 of first annular spacing spout 24 when rotatory.
Specifically, the inner adjusting assembly 3 includes an inner adjusting sleeve 31, a second sliding block 32, a second limiting sliding block 33, a second annular limiting sliding groove 34, a hinge concave block 35, a hinge groove 36 and a third pin shaft 37, wherein an inner cylinder wall and an outer cylinder wall of the inner adjusting sleeve 31 are respectively provided with an internal thread and an external thread, the inner adjusting sleeve 31 is inserted in the outer adjusting sleeve 21 in a threaded manner, the inner adjusting sleeve 31 is sleeved on an outer wall of the inner bolt 12 in a threaded manner, an inner top of the adjusting groove 19 is slidably connected with the second sliding block 32, a side wall of the second sliding block 32 close to one side of the inner adjusting sleeve 31 is fixedly connected with the second limiting sliding block 33, the outer cylinder wall of the inner adjusting sleeve 31 is provided with the second annular limiting sliding groove 34 corresponding to the second limiting sliding block 33, the bottom of the second sliding block 32 is fixedly connected with the hinge concave block 35, the bottom of the hinge concave block 35 is provided with the hinge groove 36, one end of the second expansion rod 29 far from the second pin shaft 28 extends to the inside of the hinge groove 36, one end of the second expansion rod 29 extending to the inside of the hinge groove 36 is hinged to the hinge concave block 35 through a third pin shaft 37, and when the inner adjusting sleeve 31 in the inner adjusting assembly 3 rotates in the outer adjusting sleeve 21, the inner adjusting sleeve 31 can drive the second sliding block 32 to lift in the adjusting groove 19 through a second limiting sliding block 33 in the second annular limiting sliding groove 34.
Specifically, the equidistant fixedly connected with a plurality of bracer 15 of one end that toper end of pegging graft 13 is close to shell body 11, connecting groove 16 has been seted up to corresponding bracer 15 on the inner wall of shell body 11, connecting groove 16 and the setting of bracer 15 phase-match, interior bolt 12 can drive threaded connection's toper end of pegging graft 13 and remove towards the inside of shell body 11 when stretching outwards, can drive bracer 15 when toper end of pegging graft 13 when stretching outwards and strut shell body 11 along connecting groove 16 for shell body 11 can not break away from by the inside of wall body.
Specifically, be provided with packing ring 17 between nut 18 and the shell body 11, packing ring 17 cup joints the one end that interior bolt 12 extends shell body 11, and packing ring 17 can increase the area of contact between installed part and nut 18 and the shell body 11, can effectually make to be connected more stable between nut 18 and the shell body 11.
Specifically, the diameter of the conical insertion end 13 is larger than the inner diameter of the outer shell 11, so that the conical insertion end 13 can be effectively prevented from sliding to the inside of the outer shell 11, and the inner bolt 12 can be effectively supported by the conical insertion end 13.
In use, as shown in fig. 2, in an initial state, the first expansion rod 27 and the second expansion rod 29 are both located inside the adjustment groove 19 and at a central position, the tapered insertion end 13 is firstly contacted with the floor, because the top end of the tapered insertion end 13 is sharp, the tapered insertion end 13 can conveniently drive the outer shell 11 to be inserted into the floor and pass through the floor, the tapered insertion end 13 passes through the floor, then the inner groove 14 is arranged on the inner wall of one end of the outer adjustment sleeve 21 and the inner adjustment sleeve 31 far away from the tapered insertion end 13 to toggle the inner wall, the outer adjustment sleeve 21 moves towards one end close to the tapered insertion end 13, and the outer adjustment sleeve 21 can drive the inner adjustment sleeve 31 to move together, when the second sliding block 32 is contacted with the inner top wall of the adjustment groove 19, the included angle between the first expansion rod 27 and the second expansion rod 29 which are hinged to each other can be reduced due to the jacking of the first sliding block 22, and the first expansion rod 27 and the second expansion rod 29 will extend outwards along the second pin 28, when the first expansion rod 27 is in the state shown in fig. 1, and after the first expansion rod 27 is horizontal, the rotation of the external adjustment sleeve 21 is stopped, finally, the internal adjustment sleeve 31 is rotated, the internal adjustment sleeve 31 can drive the second sliding block 32 to move vertically downwards when rotating, the second sliding block 32 drives the hinged second expansion rod 29 to support the first expansion rod 27 and enable the first expansion rod 27 to be in close contact with the top of the floor slab, so that the first expansion rod 27 and the second expansion rod 29 precisely connect the outer shell 11 with the floor slab.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. An expansion bolt is characterized by comprising a bolt main body assembly (1), an outer adjusting assembly (2) and an inner adjusting assembly (3), wherein the outer adjusting assembly (2) is arranged inside the bolt main body assembly (1), and the inner adjusting assembly (3) is arranged inside the outer adjusting assembly (2); the bolt main body assembly (1) comprises an outer shell (11), an inner bolt (12), a conical insertion end (13), a groove (14), a nut (18) and an adjusting groove (19), wherein an internal thread is formed on the side wall of the inner circle side of the outer shell (11), the inner bolt (12) is arranged inside the outer shell (11), the conical insertion end (13) is arranged at the top of the outer shell (11), the groove (14) is formed in the bottom of the conical insertion end (13) corresponding to the inner bolt (12), an internal thread is formed in the groove (14) corresponding to an external thread on the outer wall of the inner bolt (12), the inner bolt (12) is in threaded insertion connection with the groove (14), one end, far away from the conical insertion end (13), of the inner bolt (12) extends out of the outer shell (11), and the nut (18) is in threaded sleeve connection with the outer wall of the inner bolt (12) extending out of one end of the outer, a plurality of adjusting grooves (19) are formed in the outer wall of the outer shell (11) in a penetrating mode at equal intervals.
2. An expansion bolt according to claim 1, wherein: the outer adjusting component (2) comprises an outer adjusting sleeve (21), a first sliding block (22), a first limiting sliding block (23), a first annular limiting sliding groove (24), a hinged convex block (25), a first pin shaft (26), a first expansion rod (27), a second pin shaft (28) and a second expansion rod (29), wherein an inner cylinder wall and an outer cylinder wall of the outer adjusting sleeve (21) are respectively provided with an internal thread and an external thread, the outer adjusting sleeve (21) is in threaded connection with the inside of the outer shell (11), the outer adjusting sleeve (21) is in threaded connection with the outer shell (11), one end of the inner sliding block of the adjusting groove (19) is in sliding connection with the first limiting sliding block (22), the side wall of the first sliding block (22) close to one side of the outer adjusting sleeve (21) is fixedly connected with the first limiting sliding block (23), the outer adjusting sleeve (21) is provided with the first annular limiting sliding groove (24) corresponding to the first limiting sliding block (23), first spacing spout of annular (24) and first spacing slider (23) phase-match setting, the articulated lug of top fixedly connected with (25) of first sliding block (22), the both sides at articulated lug (25) top all are provided with first expansion link (27), first expansion link (27) are articulated through first round pin axle (26) and articulated lug (25), two the one end of articulated lug (25) is kept away from in first expansion link (27) is articulated through second round pin axle (28) has second expansion link (29), second expansion link (29) set up between two first expansion links (27), the length of second expansion link (29) is greater than the length of first expansion link (27).
3. An expansion bolt according to claim 1, wherein: the inner adjusting assembly (3) comprises an inner adjusting sleeve (31), a second sliding block (32), a second limiting sliding block (33), a second annular limiting sliding groove (34), a hinged concave block (35), a hinged groove (36) and a third pin shaft (37), wherein internal threads and external threads are respectively arranged on the inner cylinder wall and the outer cylinder wall of the inner adjusting sleeve (31), the inner adjusting sleeve (31) is in threaded connection with the inside of the outer adjusting sleeve (21), the inner adjusting sleeve (31) is in threaded connection with the outer wall of the inner bolt (12), the inner top of the adjusting groove (19) is in sliding connection with the second sliding block (32), the side wall of the second sliding block (32) close to one side of the inner adjusting sleeve (31) is fixedly connected with the second limiting sliding block (33), the outer cylinder wall of the inner adjusting sleeve (31) is provided with the second annular limiting sliding groove (34) corresponding to the second limiting sliding block (33), articulated concave block (35) of bottom fixedly connected with of second sliding block (32), articulated groove (36) have been seted up to the bottom of articulated concave block (35), the inside in articulated groove (36) is extended to the one end that second round pin axle (28) was kept away from in second expansion link (29), just second expansion link (29) extend to the inside one end in articulated groove (36) and articulate concave block (35) through third round pin axle (37).
4. An expansion bolt according to claim 1, wherein: the utility model discloses a taper splicing device, including shell body (11), toper grafting end (13) are close to the equidistant fixedly connected with a plurality of bracer (15) of one end of shell body (11), spread groove (16) have been seted up corresponding bracer (15) on the inner wall of shell body (11), spread groove (16) and bracer (15) phase-match set up.
5. An expansion bolt according to claim 1, wherein: a gasket (17) is arranged between the screw cap (18) and the outer shell (11), and the gasket (17) is sleeved at one end, extending out of the outer shell (11), of the inner bolt (12).
6. An expansion bolt according to claim 1, wherein: the diameter of the conical insertion end (13) is larger than the inner diameter of the outer shell (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011529580.5A CN112610580B (en) | 2020-12-22 | 2020-12-22 | Expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011529580.5A CN112610580B (en) | 2020-12-22 | 2020-12-22 | Expansion bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112610580A true CN112610580A (en) | 2021-04-06 |
| CN112610580B CN112610580B (en) | 2022-12-13 |
Family
ID=75245415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011529580.5A Active CN112610580B (en) | 2020-12-22 | 2020-12-22 | Expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112610580B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062907A (en) * | 2021-04-12 | 2021-07-02 | 夏俊文 | Expansion fastening bolt for cork material and mounting method thereof |
| CN113217515A (en) * | 2021-05-20 | 2021-08-06 | 香港理工大学 | Blind plate bolt |
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| CN107355458A (en) * | 2017-07-06 | 2017-11-17 | 海盐县通顺标准件厂 | A kind of modified form setscrew |
| CN107605913A (en) * | 2017-10-30 | 2018-01-19 | 安徽凯瑞汽配制造有限公司 | A kind of adjustable type anti-drop bolt |
| CN108006038A (en) * | 2017-11-30 | 2018-05-08 | 张印 | A kind of expansion bolt |
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| CN208605467U (en) * | 2018-07-21 | 2019-03-15 | 天津市信泰科技发展有限公司 | A kind of helix nailing that band is auxiliarily fixed |
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| CN211525285U (en) * | 2020-01-13 | 2020-09-18 | 深圳市建辉五金制品有限公司 | Novel unsmooth self-adaptation expansion bolts |
| CN111501746A (en) * | 2020-04-27 | 2020-08-07 | 辽宁沈通电力桩基础研发有限公司 | Rock self-locking anchor rod |
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| CN113062907A (en) * | 2021-04-12 | 2021-07-02 | 夏俊文 | Expansion fastening bolt for cork material and mounting method thereof |
| CN113217515A (en) * | 2021-05-20 | 2021-08-06 | 香港理工大学 | Blind plate bolt |
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| CN112610580B (en) | 2022-12-13 |
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Effective date of registration: 20221028 Address after: 362341 Guanqiao town Xizhuang village, Nan'an City, Quanzhou City, Fujian Province (Nan'an supporting area, Quanzhou export processing zone) Applicant after: Quanzhou Shuangyi Machinery Co.,Ltd. Address before: Room 902, building 11, Shuguang garden, 5-41 Zhanghua Road, Haidian District, Beijing Applicant before: Zheng Zhiqiang |
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